Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane— 40 стр.
Food processing machinery - Catering attachments for machines having an auxiliary drive hub - Safety and hygiene requirements; German version EN 12851:2005+A1:2010— 46 стр.
Food processing machinery - Catering attachments for machines having an auxiliary drive hub - Safety and hygiene requirements; German version EN 12851:2005— 43 стр.